def eu_testna_statistika(var, year):
#return 1.734
s,f = seznam_vzorec(var, year)
n = len(s)
probability = 0.10
#TODO figure out why n-2 and not n-1
t = statistics.tinv(probability, n-2)
return t
def t_vrednost(var, year):
n = len(seznam_vzorec(var, year)[0])
probability = 0.10
t = statistics.tinv(probability, n-1)
t_array = [round(t, 2),
round(t, 3),
round(t, 3)]
return t_array
def zaupanje_aritmeticna(var, year):
s,f = seznam_vzorec(var, year)
n = len(s)
asredina = stats.lmean(s)
#z = 2.093
# print n, "artimeticna", var, year
probability = 0.10
z = round(statistics.tinv(probability, n-1), 2)
# print "z is", z
std = math.sqrt(vzorcna_varianca(var, year)[0])
interval1 = asredina - (z * (std / math.sqrt(n)) )
interval2 = asredina + (z * (std / math.sqrt(n)) )
return interval1, interval2